Abstract: New sol resin chemical grout is divided into liquid A and liquid B.Liquid A is prepared by melamine-modified urea-formaldehyde resin,polyester resin and polyvinyl alcohol.Liquid B is prepared by oxalic acid(10%～ 25% concentrations) and hydrazine base carbon sulfamides.The new grout can be used with liquid A and B together or liquid A only.The field application practice shows that the groutability of the new sol resin chemical grout for rich water low permeability aquifer rocks with pore and micro fissures is good,and the water plugging effect is obvious.